Pressure tank cap



Nov. 25, 1930. A. w. KEGLER PRESSURE TANK CAP Filed April 13, 1927 INVENTOFI ANTON W KE6LEF? BYE fl4 M' H 1- Tan/vars Patented Nev. 25, 1930 STA PATENT FFICE a ANTON W. 'KIEGLERYOE MINNEAPOLIS, MINNESO A; Asslenon To HUDSON MANU- raorunrn co; or MINNEAPOLIS, mnnso're, A eonrormrion or MINNESOTA rnnssnnn TANK GAP 2 i cylinder in such manner thatthetankcan be carried by the pump rod, and further in such manner that no rotary movement of thetank will act to disengage the rod from the cylinder,ito allow the cylinder and tankto drop! j The main feature of the invention relates to a cap secured to theprojecting end of the cylinder, the cap having a diametric slot and having pocketsone at each side of the slot aligned crosswise thereof, along with'diametrically related lugs on the piston adapted to pass through the slot' only when aligned lengthwise thereof and further adapted to engage the pockets'when disposed crosswise. The features of the invention include the a hroad idea of providing upwardlydirected pockets-or bulges to prevent rotation of the cylinder and tank upon the pump rod when carrying, as well as the details of construction of the cylinder cap, to provide pockets extending upwardly from the top inner surface of the cap. 1 I p Objects, advantages and features of the invention will be disclosed in the description of the drawings forming a part of this application and in said drawings:

Figure 1 is an elevation partly in section showing the general arrangement of the pump unit in the tank; o a I Figure 2 is a view similar to Figure showing'thejlugsarranged to rise to locked position when the rod is drawnupwardly;

Figure 3 is a view similar in nature to Figure 2, but taken at rightangles to said figure, showing the lugs of the piston rod arranged to permit pumping movements of the rod; 1 r V V 1 Figure 4c is a plan section taken on line 4-4:

of Figure 2; l y

Figure 5 is a vertical section taken on line 5--5 of Figure 2 showing the rod raisedand 1927;, Serial N01 183,461.

the lugs within the pockets, condition,{ I A 111g the device to be carried byithe pump rod;

Figure 6 is an enlarged detailed section through the cap, the plane of the section corresponding to Figure8;and'

Figure 7 is an enlarged detailed section through the cap, the plane. of the section corresponding to Figure 2.

Numeral l designates the tank or receptacle having an opening 2 in its upper all. Within the opening and projecting upwardly thereabove is removably fitted a pump unit comprising a cylinder 3;"pump rod 4:. The

7 upper end of the cylinder is flanged as at 6.

This flange engages downwardly upon a gasket which gasket rests upon the top of a tubular extension 8 of the tank 1. 9 indicates the supply tuhe having the usual hose, the hose having a shut-elf valve, not shown. It will be understood that inward travel of the pump rod 4 causes ejectionof the fluid from the tank through the supply tube 9. I

The feature of this invention is the cap 10. This cap rests againstthe flange 6and closes the upper end ofthe pump cylinder. The cap is threaded interiorly and these threads are engaged with corresponding threadsof the tubular extension 8, to removably secure the cap to thecontainer and closethepump cylinder andupper end of extension 8.

Diametrically related lugs 15 are provided,-

these lugs in this instance being formed upon a terminal tuloularextensionlti of a handle 17. A cross pin 18 secures the handle to the upper vportion ofthe pump rod 4. p

. The cap is further providedat its upper outer side with a "hollow nut-like extension 25; In this case; having anexterior hexag-i on :11 configuration, see Figure 1 L This ex tension 25 has a dialnetric slot 26 of less width than the tubular eXten'sion16 of the handle. Portions of this slot lie "at opposite sides ofa circular opening 27 which circular opens ing has a diameter slight larger thanthat of the extension. It will he understood that when the ,diametric projections of "theextension 16 are aligned with the slot-26, pumping operationsmay be obtained by means of the rod 4. When, however, the rod is rotated a t e lugs l gl q P g fa wise of the slot, they engage to prevent such operation of the pump rod. In this position, were it not for the construction provided by this invention, rotative movements of the tank would disengage the lugs 15 and cause them to be re-aligne'd with the opening 26 which, when the tank was being carried, would result in falling of the tank due to withdrawal of, the pump rod or rather due to the downward movement of the cylinder upon the pump rod. In order to avoid this, pockets 28 are formed in the cap, and in this instance they bulge outwardly beyond the plane of the top inner surface of the cap. These outwardly bulged portions, therefore,

define outwardly directed depressions in the inner top surface of the cap, into which the lugs 15 are adapted to seat as shown n F 1gures 4 and 5. These pockets thus act as stops to prevent rotation of the cylinder and tank upon the pump rod.

The pump rod passes through an opening 30 in the cap. The extension 16 as well as the lugs 15 are, however, of too greata size to pass through the opening 30. It will be noted that the lugs are removed from looking position to assume the position shown in dotted lines in Figure 4, or in full lines in Figure 2, upon rotation of the rod in clockwise direction, as viewed in Figure at. Rotation in that direction will also act to screw the cap downwardly to clamping and closing po sition. A rotation of the pump rod in counter clockwise, however, will act to unscrew the cap. In order to obtain this latter effect, shoulders 31 are provided, see Figure at. These shoulders extend from the top surface of the cap, see Figures 3, 6 and 7. The inner vertical wall of the extension 25, including the stop shoulders 31 are continuat-ions of the end walls 32 of the slot, and the flat surfaces 32 merge gradually into the curved vertical surfaces 34 which, in turn, merge into the shoulders 31. Whatever the construction, the pump rod is limited in this instance for movement in counter-cloclnvise direction so that the cap can be unscrewed when the lugs assume the full line position shown in Figure 4. Conversely, the arrangement of the lugs in regard to the slot 26 is such that when the rod is turned in clockwise direction, as viewed in Figure 4, to engage the vertical walls 26 of the slot 26, the nut may be screwed to clamping position.

I claim as my invention:

1. A device of the class described comprising a tank, a cylinder having a piston rod, means connected to the tank and having a slot, and a pocket arranged at an angle tothe slot and facing toward the tank, said piston rod traversing the slot and having lugs adapted to pass through the slot when the rod is in one angular position and further adapted when disposedin another angular position to be conditioned for engagement with the pocket and after partial withdrawal of the rod to enter said depression, and arranged so that after the lugs have entered the pocket the elements are maintained in cooperative relation by the Weight of the tank to prevent tank rotation.

2. A device of the class described comprising a tank, a cylinder having a piston rod, a cap as a casting securing the cylinder to the tank, said cap having a slot and further having a pocket, said piston rod traversing the slot and having lugs adapted to pass through the slot when in one angular position, and adapted when disposed in another angular position to be positioned for engagement with the pocket and to enter the pocket after a partial withdrawal of the rod, during the liftingaction, the pocket being so arranged that after the lugs have entered and when the tank is clear of its support the weight of the tank maintains the elements in 0001)- erative relation to prevent rotation of the tank upon the rod.

3. A device of the class described comprising a tank having a filling extension in its top, a cylinder passing loosely through the extension and having a tap flange engaging the extension as a stop, and a cap detachably secured to the extension and acting to clamp the flange against the extension said cap having a slot and further having a pocket angularly related to the slot, said cylinder having a piston rod traversing the slot and having lugs adapted to pass through the slot when in one angular position, and adapted when disposed in another angular position to enter the pocket after a partial withdrawal of the rod during a lifting action.

In witness whereof, I have hereunto set my hand this 1st day of April, 1927.

F ANTON W. KEGLER. 

